1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivanzaharov [21]
2 years ago
12

What is the answer to 6 x 2 + 18 x 2 -3 x 2?

Mathematics
2 answers:
Stels [109]2 years ago
8 0
42x if I'm correct. Hope this helps.
stellarik [79]2 years ago
6 0
The answer is: 42. use order of operations
You might be interested in
This is urgent please help me
mars1129 [50]

Answer:

23 mpg

161/7=23

Add in the unit you are measuring by, and you get 23 mpg

7 0
3 years ago
Read 2 more answers
1. In triangle XYZ, A is the midpoint of XY, B is the midpoint of YZ, and C is the midpoint of XZ. Also, AY = 7, BZ = 8, and XZ
Varvara68 [4.7K]

Answer:

Part 1) The perimeter of triangle ABC is 24 units

Part 2) y=97\°

Step-by-step explanation:

Part 1) we know that

The <u><em>Midpoint Theorem</em></u> states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

see the attached figure to better understand the problem

so

Applying the midpoint theorem

step 1

Find the value of BC

BC=\frac{1}{2}XY

XY=2AY ---> because A is the midpoint

substitute the given value of AY

XY=2(7)=14\ units

BC=\frac{1}{2}(14)=7\ units

step 2

Find the value of AC

AC=\frac{1}{2}YZ

YZ=2BZ ---> because B is the midpoint

substitute the given value of BZ

YZ=2(8)=16\ units

AC=\frac{1}{2}(16)=8\ units

step 3

Find the value of AB

AB=\frac{1}{2}XZ

substitute the given value of XZ

AB=\frac{1}{2}(18)=9\ units

step 4

Find the perimeter of triangle ABC

P=AB+BC+AC

substitute

P=9+7+8=24\ units

Part 2) Find the measure of angle y

step 1

Find the measure of angle z

we know that

The sum of the interior angles in a triangle must be equal to 180 degrees

so

55\°+42\°+z=180\°

solve for z

97\°+z=180\°

z=180\°-97\°

z=83\°

step 2

Find the measure of angle y

we know that

z+y=180\° ----> by supplementary angles (form a linear pair)

we have

z=83\°

substitute

83\°+y=180\°

solve for y

y=180\°-83\°

y=97\°

6 0
3 years ago
Factorise: 3x^2 +5x -3
Lubov Fominskaja [6]
This expression can not be factored with rational numbers. the polynomial is not factor able with rational numbers.
5 0
3 years ago
A National Retail Foundation survey found households intend to spend an average of $469 during the December holiday season. Assu
vivado [14]

Answer:

The margin of error for a 99% confidence interval. is of $2.25.

Step-by-step explanation:

We have the sample's variance, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 600 - 1 = 599

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 600 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 2.84.

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample(square root of the variance) and n is the size of the sample.

In this question:

s = \sqrt{375}, n = 600. So, the margin of error is of:

M = 2.84\frac{\sqrt{375}}{\sqrt{600}} = 2.25

The margin of error for a 99% confidence interval. is of $2.25.

7 0
2 years ago
What is the slope of the line passing through the points (0,-5) and (4,2)<br>​
Vesna [10]

Answer: 7/4.

Step-by-step explanation: To find the slope of a line, one must use the formula (y2-y1)/(x2-x1). In this case y2 is 2, y1 is -5, x2 is 4, and x1 is 0. We can plug this into the equation to get 7/4.

7 0
2 years ago
Other questions:
  • Round 5,836,197 to the nearest humdred
    10·2 answers
  • PLEASE HELP ASAP!!!!!!
    15·1 answer
  • Which or the following is the radical expression of 4d3/8
    8·1 answer
  • Angles that share a vertex, but not a side are called
    14·1 answer
  • Jose bought 750 bags of peanuts for $375.00. He tends to sell each bag for 0.15 more than he paid. how much he change for each b
    12·2 answers
  • Find the weight of a 25kg table.
    9·2 answers
  • Is f(x)=2x^(3)+6x even, odd, or neither?
    15·1 answer
  • The telephone company made this table to show the number of telephones in the homes they surveyed: Phones in home o 1 2 34 or mo
    14·2 answers
  • Find sales tax and the total cost. Round to merest cent <br><br>cost: $65 rate of sales tax: 6%​
    12·1 answer
  • Solve the compound inequality y + 7 ≥ –1 and y∕4 + 3 ≤ 5
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!